;; Pipeline descriptions of Andes NDS32 cpu for GNU compiler ;; Copyright (C) 2012-2021 Free Software Foundation, Inc. ;; Contributed by Andes Technology Corporation. ;; ;; This file is part of GCC. ;; ;; GCC is free software; you can redistribute it and/or modify it ;; under the terms of the GNU General Public License as published ;; by the Free Software Foundation; either version 3, or (at your ;; option) any later version. ;; ;; GCC is distributed in the hope that it will be useful, but WITHOUT ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public ;; License for more details. ;; ;; You should have received a copy of the GNU General Public License ;; along with GCC; see the file COPYING3. If not see ;; http://www.gnu.org/licenses/.

;; ------------------------------------------------------------------------ ;; Define N9 3R2W pipeline settings. ;; ------------------------------------------------------------------------

(define_automaton “nds32_n9_3r2w_machine”)

;; ------------------------------------------------------------------------ ;; Pipeline Stages ;; ------------------------------------------------------------------------ ;; IF - Instruction Fetch ;; II - Instruction Issue / Instruction Decode ;; EX - Instruction Execution ;; MM - Memory Execution ;; WB - Instruction Retire / Result Write-Back

(define_cpu_unit “n9_3r2w_ii” “nds32_n9_3r2w_machine”) (define_cpu_unit “n9_3r2w_ex” “nds32_n9_3r2w_machine”) (define_cpu_unit “n9_3r2w_mm” “nds32_n9_3r2w_machine”) (define_cpu_unit “n9_3r2w_wb” “nds32_n9_3r2w_machine”)

(define_insn_reservation “nds_n9_3r2w_unknown” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “unknown”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_misc” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “misc”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mmu” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “mmu”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_alu” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “alu”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_alu_shift” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “alu_shift”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_pbsad” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “pbsad”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*3, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_pbsada” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “pbsada”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*3, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (match_test “nds32::load_single_p (insn)”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (match_test “nds32::store_single_p (insn)”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_1” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “1”)))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_2” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (ior (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “2”)) (match_test “nds32::load_double_p (insn)”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_3” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “3”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_4” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “4”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_5” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “5”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*2, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_6” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “6”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*3, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_7” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “7”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*4, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_8” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “8”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*5, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_load_multiple_12” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “load_multiple”) (eq_attr “combo” “12”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*9, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_1” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “1”)))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_2” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (ior (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “2”)) (match_test “nds32::store_double_p (insn)”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_3” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “3”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_4” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “4”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_5” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “5”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*2, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_6” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “6”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*3, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_7” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “7”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*4, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_8” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “8”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*5, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_store_multiple_12” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “pipeline_model” “n9”) (and (eq_attr “type” “store_multiple”) (eq_attr “combo” “12”)))) “n9_3r2w_ii, n9_3r2w_ii+n9_3r2w_ex, n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm, (n9_3r2w_ii+n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb)*9, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_mm+n9_3r2w_wb, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mul_fast1” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W && nds32_mul_config == MUL_TYPE_FAST_1”) (and (eq_attr “type” “mul”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mul_fast2” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W && nds32_mul_config == MUL_TYPE_FAST_2”) (and (eq_attr “type” “mul”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*2, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mul_slow” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W && nds32_mul_config == MUL_TYPE_SLOW”) (and (eq_attr “type” “mul”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*17, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mac_fast1” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W && nds32_mul_config == MUL_TYPE_FAST_1”) (and (eq_attr “type” “mac”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mac_fast2” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W && nds32_mul_config == MUL_TYPE_FAST_2”) (and (eq_attr “type” “mac”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*2, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_mac_slow” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W && nds32_mul_config == MUL_TYPE_SLOW”) (and (eq_attr “type” “mac”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*17, n9_3r2w_ex+n9_3r2w_mm, n9_3r2w_ex+n9_3r2w_mm+n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_div” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “div”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex*34, n9_3r2w_mm, n9_3r2w_wb”)

(define_insn_reservation “nds_n9_3r2w_branch” 1 (and (match_test “nds32_register_ports_config == REG_PORT_3R2W”) (and (eq_attr “type” “branch”) (eq_attr “pipeline_model” “n9”))) “n9_3r2w_ii, n9_3r2w_ex, n9_3r2w_mm, n9_3r2w_wb”)

;; ------------------------------------------------------------------------ ;; Comment Notations and Bypass Rules ;; ------------------------------------------------------------------------ ;; Producers (LHS) ;; LD ;; Load data from the memory and produce the loaded data. The result is ;; ready at MM. ;; LMW(N, M) ;; There are N micro-operations within an instruction that loads multiple ;; words. The result produced by the M-th micro-operation is sent to ;; consumers. The result is ready at MM. ;; MUL, MAC ;; Compute data in the multiply-adder and produce the data. The result ;; is ready at MM. ;; DIV ;; Compute data in the divider and produce the data. The result is ready ;; at MM. ;; ;; Consumers (RHS) ;; ALU, MOVD44, PBSAD, PBSADA_RaRb, MUL, MAC, DIV, MMU ;; Require operands at EX. ;; ALU_SHIFT_Rb ;; An ALU-SHIFT instruction consists of a shift micro-operation followed ;; by an arithmetic micro-operation. The operand Rb is used by the first ;; micro-operation, and there are some latencies if data dependency occurs. ;; MAC_RaRb ;; A MAC instruction does multiplication at EX and does accumulation at MM, ;; so the operand Rt is required at MM, and operands Ra and Rb are required ;; at EX. ;; ADDR_IN ;; If an instruction requires an address as its input operand, the address ;; is required at EX. ;; ST ;; A store instruction requires its data at MM. ;; SMW(N, M) ;; There are N micro-operations within an instruction that stores multiple ;; words. Each M-th micro-operation requires its data at MM. ;; BR ;; If a branch instruction is conditional, its input data is required at EX.

;; LD, MUL, MAC, DIV ;; -> ALU, ALU_SHIFT_Rb, PBSAD, PBSADA_RaRb, MOVD44, MUL, MAC_RaRb, DIV, ADDR_IN, BR, MMU (define_bypass 2 “nds_n9_3r2w_load,
nds_n9_3r2w_mul_fast1, nds_n9_3r2w_mul_fast2, nds_n9_3r2w_mul_slow,
nds_n9_3r2w_mac_fast1, nds_n9_3r2w_mac_fast2, nds_n9_3r2w_mac_slow,
nds_n9_3r2w_div” “nds_n9_3r2w_alu, nds_n9_3r2w_alu_shift,
nds_n9_3r2w_pbsad, nds_n9_3r2w_pbsada,
nds_n9_3r2w_mul_fast1, nds_n9_3r2w_mul_fast2, nds_n9_3r2w_mul_slow,
nds_n9_3r2w_mac_fast1, nds_n9_3r2w_mac_fast2, nds_n9_3r2w_mac_slow,
nds_n9_3r2w_branch,
nds_n9_3r2w_div,
nds_n9_3r2w_load,nds_n9_3r2w_store,
nds_n9_3r2w_load_multiple_1,nds_n9_3r2w_load_multiple_2, nds_n9_3r2w_load_multiple_3,
nds_n9_3r2w_load_multiple_4,nds_n9_3r2w_load_multiple_5, nds_n9_3r2w_load_multiple_6,
nds_n9_3r2w_load_multiple_7,nds_n9_3r2w_load_multiple_8, nds_n9_3r2w_load_multiple_12,
nds_n9_3r2w_store_multiple_1,nds_n9_3r2w_store_multiple_2, nds_n9_3r2w_store_multiple_3,
nds_n9_3r2w_store_multiple_4,nds_n9_3r2w_store_multiple_5, nds_n9_3r2w_store_multiple_6,
nds_n9_3r2w_store_multiple_7,nds_n9_3r2w_store_multiple_8, nds_n9_3r2w_store_multiple_12,
nds_n9_3r2w_mmu” “nds32_n9_3r2w_mm_to_ex_p” )

;; LMW(N, N) ;; -> ALU, ALU_SHIFT_Rb, PBSAD, PBSADA_RaRb, MOVD44, MUL, MAC_RaRb, DIV, ADDR_IN, BR, MMU (define_bypass 2 “nds_n9_3r2w_load_multiple_1,nds_n9_3r2w_load_multiple_2, nds_n9_3r2w_load_multiple_3,
nds_n9_3r2w_load_multiple_4,nds_n9_3r2w_load_multiple_5, nds_n9_3r2w_load_multiple_6,
nds_n9_3r2w_load_multiple_7,nds_n9_3r2w_load_multiple_8, nds_n9_3r2w_load_multiple_12” “nds_n9_3r2w_alu, nds_n9_3r2w_alu_shift,
nds_n9_3r2w_pbsad, nds_n9_3r2w_pbsada,
nds_n9_3r2w_mul_fast1, nds_n9_3r2w_mul_fast2, nds_n9_3r2w_mul_slow,
nds_n9_3r2w_mac_fast1, nds_n9_3r2w_mac_fast2, nds_n9_3r2w_mac_slow,
nds_n9_3r2w_branch,
nds_n9_3r2w_div,
nds_n9_3r2w_load,nds_n9_3r2w_store,
nds_n9_3r2w_load_multiple_1,nds_n9_3r2w_load_multiple_2, nds_n9_3r2w_load_multiple_3,
nds_n9_3r2w_load_multiple_4,nds_n9_3r2w_load_multiple_5, nds_n9_3r2w_load_multiple_6,
nds_n9_3r2w_load_multiple_7,nds_n9_3r2w_load_multiple_8, nds_n9_3r2w_load_multiple_12,
nds_n9_3r2w_store_multiple_1,nds_n9_3r2w_store_multiple_2, nds_n9_3r2w_store_multiple_3,
nds_n9_3r2w_store_multiple_4,nds_n9_3r2w_store_multiple_5, nds_n9_3r2w_store_multiple_6,
nds_n9_3r2w_store_multiple_7,nds_n9_3r2w_store_multiple_8, nds_n9_3r2w_store_multiple_12,
nds_n9_3r2w_mmu” “nds32_n9_last_load_to_ex_p” )